On all closed systems (systems having a check valve, pressure regulator, or reducing valve, or a water filter or softener) an effective temperature relief valve shall be installed either in the top tapping or the upper side tapping of the hot water tank, or on the hot water distributing pipe connection at the tank. A one-half (½) inch drain pipe shall be connected to the relief valve for discharge on the floor or into a sink or open drain. No stop valve shall be placed between the hot water tank and relief valve or on the drain pipe.
(Ord. 2011-59. Passed 8-9-11.)